On Sun, 24 Jan 2010, Michael Niedermayer wrote:
> btw, are there videos with both alpha_offset<beta_offset
> and beta_offset < alpha_offset ? because if one doesnt occur in practice we
> could drop one of these checks.
By far the most common case is alpha_offset==beta_offset. But if the user
messed with them, there's no reason to expect one direction over the
other.
--Loren Merritt